ninochipsjr628
ninochipsjr628 ninochipsjr628
  • 12-03-2018
  • Mathematics
contestada

Determine if x + 3 is a factor of -3x^3+6x^2+6x+9, and how do you know?

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jcherry99
jcherry99 jcherry99
  • 12-03-2018
Begin by taking out -3 as a common factor.
-3(x^3 - 2x^2 - 2x - 3)
If x + 3 is a factor, what is inside the brackets should be 0 when x = - 3 It is not. There is only one real root and that is when (x - 3) is equated to 0. Just to show the root is +3, the graph is included.  
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